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Long Range Hunting & Shooting
how can l notice barrel wear?
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<blockquote data-quote="MontanaRifleman" data-source="post: 391248" data-attributes="member: 11717"><p>Soundwaves, </p><p> </p><p>The answer will vary barrel to barrel. Typically you might expect anywhere from 1000-2500 rounds of barrel life in a 7RM. I have shot an estimated 1100-1200 in my Ruger M77 &RM and the throat is cooked according to a gun smith who bore scoped it for me. I shot factory and handloads in it, mostly handloads and they were on the "warm" side... a half grain shy of a sticky bolt. At one time the rifle would shoot a consistent .75 MOA and now shoots about 3-4 MOA. However, there are a few other issues with the rifle that may be the cause of the poor accuracy, not the least of which is being bedded in an older cheap synthetic stock that has compressed over the years and is a terrible platform for the action. I suspect if I put it in a better stock, the accuracy would improve, but who knows by how much?</p><p> </p><p>I also have a Sendero 25-06 that the same smith bore scoped and he basically said it was one of the worse cases of fire cracking he had ever seen and this rifle is a consistent .5 MOA shooter... sometimes better.</p><p> </p><p>So the bottom line is that you can only guess when your accuracy will go south. If you want to increase the barrels life, using milder loads will/should help.</p><p> </p><p>Cheers,</p><p> </p><p>Mark</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 391248, member: 11717"] Soundwaves, The answer will vary barrel to barrel. Typically you might expect anywhere from 1000-2500 rounds of barrel life in a 7RM. I have shot an estimated 1100-1200 in my Ruger M77 &RM and the throat is cooked according to a gun smith who bore scoped it for me. I shot factory and handloads in it, mostly handloads and they were on the "warm" side... a half grain shy of a sticky bolt. At one time the rifle would shoot a consistent .75 MOA and now shoots about 3-4 MOA. However, there are a few other issues with the rifle that may be the cause of the poor accuracy, not the least of which is being bedded in an older cheap synthetic stock that has compressed over the years and is a terrible platform for the action. I suspect if I put it in a better stock, the accuracy would improve, but who knows by how much? I also have a Sendero 25-06 that the same smith bore scoped and he basically said it was one of the worse cases of fire cracking he had ever seen and this rifle is a consistent .5 MOA shooter... sometimes better. So the bottom line is that you can only guess when your accuracy will go south. If you want to increase the barrels life, using milder loads will/should help. Cheers, Mark [/QUOTE]
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how can l notice barrel wear?
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